Nut lock



A. J. ELIAS April 22, 1930.

NUT LOCK Filed Dec. 31, 1928 I threaded. s V Another object is the provision of a nut lock Patented A t. 22,1930

AMSII-I JOHN ELIAS, or DEoArU'a'ILLINoIs NUT LOCK Application filed December 31,1928. Serial nurszasss.

This invention relates to'nut locks and the main object is to provide a positive and efficient lock to prevent accidental displacement of a: nut from the bolt upon which it is which will be simple and durable in construction. i V The foregoing and other objects of the invention together with means whereby the I same may be carried out will best'be understood from the following description of a certain preferred embodiment of the'inven tion taken in connection with 'the 'accompanying drawing in which:

Figure 1 is a partlally sectional view of a v 7 'bolt and nut-constructed in accordance .with' theinvention. i

Figure 2 is a section along the line 2-2 in Figure1.

Figure 3 isa side elevation of a modified form of bolt. 7 I

Figure 4 isa side elevation of form of nut.

Referring now more particularly-to the a modified drawing the reference numerals 1 and2 de 1 note the bolt and nut respectively, the same being formed of any suitable material. .The

bolt 1 has the threaded end 3 and the conven- 3 tional head 1 and the'end of this bolt is split by a diametrically extended slot 5 into two sect-ions as shown. The nut'2 comprisesan outer casing 6 having a threaded bore 7 slightly larger in diameter than the bolt land plug 9 is adj u'stably mounted in this socket 8 and carries the spring clips 10 which are adapted to receive the head 11 of thebolt expander1 2 in such manner that the said expander 12'may rotate in the olips'but will be held therein in the position shown. The said bolt expanded 12-is flattened or tapered toward its'free end as shown at 13 in Figure'2 and isalso flared laterally as shownat 14 in Figure 1 so that an expansion coil spring 15 may be braced between this flared end and the clips 10, which the said spring embraces, to j aid in holding the expander in position as will be understood. A portion of the end of wood.

a threaded socket 8 at one end. A threaded 1 7 ing its threaded end slotted longitudinally, a

the casing 6 of. the nut 2 opposite to the end a LuN TED STATES] A-TEN Q FICE in which is the'socket 8 is split and sprung I outwardly as'at 16 so that it may serve in the v usual manner as a lock washer.

In the use of the device the nut 2 is threaded on the bolt 1' in engagement with the work.

The threaded plug 9 carrying the expander 12 is then threaded in the socket 8 by inserting the threaded plug or by any other suitable inward into the nut 2 the expander 12 will a screw driver (not shown) in the kerf 21 in enterthe slot 5 in the bolt and expand the end of this bolt outward sothat the threads upon the bolt will firmly grip the threads in the bore 7 andsecurely hold the nut in place.

. In Figures 3 and a the bolt 17 and nut 18" I 'aredesigned particularly for use in wood or other relatively soft material. The bolt 17 is 1 threaded and has the slot 19 for the reception 'of the bolt expander as hereinbefore set forth and has its end rounded as shown to facilitate fers from thehereinbefore described nut 2 only in thatit has a diametrically enlarged lock washer 20 formed on one end so that it" will afford a greater'bearing surface upon the While I have herein set forth certain preferred embodiments of my invention it is un-V derstood that]: may vary from the same in minor structural details not departing from V its insertion into the wood; The nut 18 difthe spiritof the invention and within the scope of the appended claims.

'I claim: r

1. In a nut lock, in combination, a bolt havnut mounted upon the threaded end ofthe bolt, :the said nut having its bore diametri cally enlarged at its outer end to form, a

socket, a threaded plug mounted in the said socket, spring clips upon the inner face of the said plug, a flat, wedge-like bolt expander of the bolt, the said. nut having its bore dia- 10 metrically enlarged at its outer end to form a socket, a threaded plug mounted in the said socket, spring clips upon the inner face of the said plug, a fiat, wedge-like bolt expander rotatively seated in the spring clips, the opposite end of the said expander being adapted to enter into the said longitudinal slot of the bolt, and means for supporting the said bolt expander in operative position.

In testimony whereof I aflix my signature.

AMSIH J. ELIAS. 

